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Ksusha202
@Ksusha202
July 2022
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Упростите выражения:
а) 12р² + 5р(1 - 1р)
б) 3а³ - 2а(1 + 2а²)
в)-15у³ - 3у(1 - 5у²)
г) 6m(m³ - n³) - 1,2m⁴
д)6a(a - 1) - 2a²(3 - a)
е) 6p(5p² + p) + 15p²(2 - p)
ж) -3m(m + n²) + m(3m - n²)
з)2y(y² - x) - 2x(x² - y)
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Answers & Comments
yudina2001g
А) 12р² + 5р(1 - 1р) = 2р²+5р-5р² = 5р-3р²
б) 3а³ - 2а(1 + 2а²) = 3а³-2а-4а³ = -2а-а³
в) -15у³ - 3у(1 - 5у²) = -15у³-3у+15у³ = -3у
г) 6m(m³ - n³) - 1,2m⁴ = 6m⁴-6mn³-1,2m⁴ = 4,8m⁴-6mn³
д) 6a(a - 1) - 2a²(3 - a) = 6а²-6а-6а²+2а³ = 2а³-6а
е) 6p(5p² + p) + 15p²(2 - p) = 30р³+6р²+30р²-15р³ = 15р³+36р²
ж) -3m(m + n²) + m(3m - n²) = -3m²-3mn²+3m²-mn² = -4mn²
з) 2y(y² - x) - 2x(x² - y) = 2у³-2ху-2х³+2ху = 2у³-2х³
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Answers & Comments
б) 3а³ - 2а(1 + 2а²) = 3а³-2а-4а³ = -2а-а³
в) -15у³ - 3у(1 - 5у²) = -15у³-3у+15у³ = -3у
г) 6m(m³ - n³) - 1,2m⁴ = 6m⁴-6mn³-1,2m⁴ = 4,8m⁴-6mn³
д) 6a(a - 1) - 2a²(3 - a) = 6а²-6а-6а²+2а³ = 2а³-6а
е) 6p(5p² + p) + 15p²(2 - p) = 30р³+6р²+30р²-15р³ = 15р³+36р²
ж) -3m(m + n²) + m(3m - n²) = -3m²-3mn²+3m²-mn² = -4mn²
з) 2y(y² - x) - 2x(x² - y) = 2у³-2ху-2х³+2ху = 2у³-2х³